To our surprise Mary didn’t feel a bit nervous though it’s the first time she in public.

问题补充：

To our surprise, Mary didn’t feel a bit nervous though it’s the first time she in public.

A. spoke

B. had spoken

C. has spoken

D. speaks

答案：

A. spoke

(答案→)B. had spoken

C. has spoken

D. speaks

解析：根据句中的didn’t feel可知it’s = it was。It was the first time后面的从句中用过去完成时。句意为：使我们惊讶的是，玛丽虽是第一次当众讲话，却一点都不发慌。